iDworak et al Tumor Regression Grade (1997)

**Semantic type:** Intellectual Product

**Definition:** A grading system developed by Dworak et al (1997) to assess a decrease in tumor size or extent in the body. (Dworak O, Keilholz L, Hoffmann A. Pathological features of rectal cancer after preoperative radiochemotherapy. Int J Colorectal Dis. (1997) 12:19-23.)

**Synonyms:** - IDWORAK TUMOR REGRESSION GRADE 1997